Search Results for: Transistors
addition, subtraction, multiplication and division. by the early s electronic pocket calculators ended manufacture of mechanical calculators, although the curta remains a popular collectable item. development of electronic calculators the first mainframe computers, using firstly vacuum tubes and later transistors
apparently not at the same time). the bulgarian elka from there followed a series of electronic calculator models from these and other manufacturers, including canon , mathatronics , olivetti , scm (smith-corona-marchant), sony , toshiba , and wang . the early calculators used hundreds of germanium transistors...
https://en.wikipedia.org/wiki/Calculator